Ezra
1 Chronicles 9:19BSB·traditional attribution

Shallum son of Kore, the son of Ebiasaph, the son of Korah, and his relatives from the Korahites were assigned to guard the thresholds of the Tent, just as their fathers had been assigned to guard the entrance to the dwelling of the LORD.

Matthew Henry Presbyterian @wholebiblehenry

We have here a further account of the good posture which the affairs of religion were put into immediately upon the return of the people out of Babylon. They had smarted for their former neglect of ordinances and under the late want of ordinances.

Commenting on 1 Chronicles 9:14-34

John Gill Reformed Baptist @doctorgill

And Zechariah the son of Meshelemiah,.... Some think this refers to one that was in the times of David; but it seems rather to respect one that was after the Babylonish captivity, see Ch1 26:1 though he and his brethren were in an office established in the times of David, and the order of which was now, as then, observed: was porter of the door...

Geneva Bible Notes Reformed @genevanotes

And Shallum the son of Kore, the son of Ebiasaph, the son of Korah, and his brethren, of the house of his father, the Korahites, [were] over the work of the service, keepers of the gates of the tabernacle: and their fathers, [being] over the host of the LORD, [were] keepers of the entry.